.mt10{
    margin-top: 10px;
}
.mr10{
    margin-right: 10px;
}
.mr20{
    margin-right: 20px;
}
.mb10{
    margin-bottom: 10px;
}
.ml10{
    margin-left: 10px;
}
.fr{
    float: right;;
}
.fl{
    float: left;
}
.hand{
    cursor: pointer;
}